I can convert you can convert she can convert we can convert you can convert they can convert
V-ing form
I can be converting you can be converting she can be converting we can be converting you can be converting they can be converting
Perfect
I can have converted you can have converted she can have converted we can have converted you can have converted they can have converted
V-ing perfect
I can have been converting you can have been converting she can have been converting we can have been converting you can have been converting they can have been converting
Negation
Simple form
I can't convert you can't convert she can't convert we can't convert you can't convert they can't convert
V-ing form
I can't be converting you can't be converting she can't be converting we can't be converting you can't be converting they can't be converting
Perfect
I can't have converted you can't have converted she can't have converted we can't have converted you can't have converted they can't have converted
V-ing perfect
I can't have been converting you can't have been converting she can't have been converting we can't have been converting you can't have been converting they can't have been converting
Interrogative form
Simple form
can I convert? can you convert? can she convert? can we convert? can you convert? can they convert?
V-ing form
can I be converting? can you be converting? can she be converting? can we be converting? can you be converting? can they be converting?
Perfect
can I have converted? can you have converted? can she have converted? can we have converted? can you have converted? can they have converted?
V-ing perfect
can I have been converting? can you have been converting? can she have been converting? can we have been converting? can you have been converting? can they have been converting?
Interro-negative form
Simple form
can't I convert? can't you convert? can't she convert? can't we convert? can't you convert? can't they convert?
V-ing form
can't I be converting? can't you be converting? can't she be converting? can't we be converting? can't you be converting? can't they be converting?
Perfect
can't I have converted? can't you have converted? can't she have converted? can't we have converted? can't you have converted? can't they have converted?
V-ing perfect
can't I have been converting? can't you have been converting? can't she have been converting? can't we have been converting? can't you have been converting? can't they have been converting?